ALL RIGHT SIDE AND/OR ALL LEFT SIDE TURN SIGNAL LAMPS DO NOT FLASH | 1. Ineffective switch. 2. Ineffective feed circuit. 3. Ineffective CCN inputs or outputs. 4. Ineffective TIPM inputs or outputs. | 1. Test and replace left multi-function switch or SCCM as required. 2. Test and repair open right or left turn signal feed circuit as required. 3. Use a diagnostic scan tool to test the CCN inputs and outputs as required. Refer to the appropriate diagnostic information. 4. Use a diagnostic scan tool to test the TIPM inputs and outputs as required. Refer to the appropriate diagnostic information. |